10221213 has 8 divisors (see below), whose sum is σ = 13996768. Its totient is φ = 6629904.

The previous prime is 10221203. The next prime is 10221247. The reversal of 10221213 is 31212201.

10221213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10221213 - 2⁶ = 10221149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45931 + ... + 46152.

It is an arithmetic number, because the mean of its divisors is an integer number (1749596).

Almost surely, 2^10221213 is an apocalyptic number.

It is an amenable number.

10221213 is a deficient number, since it is larger than the sum of its proper divisors (3775555).

10221213 is an equidigital number, since it uses as much as digits as its factorization.

10221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92123.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 10221213 is about 3197.0631836109. The cubic root of 10221213 is about 217.0205265610.

Adding to 10221213 its reverse (31212201), we get a palindrome (41433414).

The spelling of 10221213 in words is "ten million, two hundred twenty-one thousand, two hundred thirteen".